Main Analysis

Comparison of Treatment Avg at Samples

Table: Summary Statistics
comparison mean(difference) max(difference) sd(difference)
rubro vs substrate -0.0022381 5.5 0.5922385
acre vs substrate -0.4685714 4.0 0.8531867

Comparison of Treatment Diff by Hour

Table: Difference Score Counts for Sedum rubrotinctum
counts rubro - substrate rubro_pct
negative/colder 615 0.3660714
positive/hotter 507 0.3017857
zero/same 558 0.3321429

Table: Difference Score Counts for Sedum acre
counts acre - substrate acre_pct
negative/colder 1355 0.8065476
positive/hotter 181 0.1077381
zero/same 144 0.0857143

Comparison of Temps by Hour

Daily temperature ranges

Table: Summary of Mean DTR for Each Treatment
mean(rubro_range) mean(acre_range) mean(soil_range)
17.52583 16.65222 18.02583

Regression of treatments vs control

## 
## Call:
## lm(formula = bare.substrate ~ Sedum.rubro, data = treat_avg)
## 
## Coefficients:
## (Intercept)  Sedum.rubro  
##     -0.2214       1.0121
## 
## Call:
## lm(formula = bare.substrate ~ Sedum.rubro, data = treat_avg)
## 
## Residuals:
##     Min      1Q  Median      3Q     Max 
## -5.6091 -0.1078  0.0561  0.2282  2.4433 
## 
## Coefficients:
##              Estimate Std. Error t value Pr(>|t|)    
## (Intercept) -0.221403   0.039630  -5.587 2.69e-08 ***
## Sedum.rubro  1.012092   0.001998 506.562  < 2e-16 ***
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## Residual standard error: 0.5859 on 1678 degrees of freedom
## Multiple R-squared:  0.9935, Adjusted R-squared:  0.9935 
## F-statistic: 2.566e+05 on 1 and 1678 DF,  p-value: < 2.2e-16

## 
## Call:
## lm(formula = bare.substrate ~ Sedum.acre, data = treat_avg)
## 
## Coefficients:
## (Intercept)   Sedum.acre  
##     -0.6477       1.0619
## 
## Call:
## lm(formula = bare.substrate ~ Sedum.acre, data = treat_avg)
## 
## Residuals:
##     Min      1Q  Median      3Q     Max 
## -4.9517 -0.1882  0.0746  0.2914  2.0740 
## 
## Coefficients:
##             Estimate Std. Error t value Pr(>|t|)    
## (Intercept) -0.64767    0.05126  -12.63   <2e-16 ***
## Sedum.acre   1.06192    0.00266  399.27   <2e-16 ***
## ---
## Signif. codes:  0 '***' 0.001 '**' 0.01 '*' 0.05 '.' 0.1 ' ' 1
## 
## Residual standard error: 0.7418 on 1678 degrees of freedom
## Multiple R-squared:  0.9896, Adjusted R-squared:  0.9896 
## F-statistic: 1.594e+05 on 1 and 1678 DF,  p-value: < 2.2e-16
## `geom_smooth()` using method = 'gam' and formula 'y ~ s(x, bs = "cs")'

Linear Model Summary Statistics
term estimate std.error statistic p.value
(Intercept) 18.496311 0.1727703 107.057250 0
rubro.vs.substrate -2.765121 0.2918090 -9.475793 0 
## `geom_smooth()` using method = 'gam' and formula 'y ~ s(x, bs = "cs")'

Linear Model Summary Statistics
term estimate std.error statistic p.value
(Intercept) 16.185584 0.1647357 98.25184 0
acre.vs.substrate -4.944637 0.1692780 -29.21016 0

Normality Tests

## 
##  Shapiro-Wilk normality test
## 
## data:  treat_avg$Sedum.rubro
## W = 0.92072, p-value < 2.2e-16

## 
##  Shapiro-Wilk normality test
## 
## data:  treat_avg$Sedum.acre
## W = 0.92854, p-value < 2.2e-16

Transformed Normality Tests

## 
##  Shapiro-Wilk normality test
## 
## data:  rubro_transform
## W = 0.94887, p-value < 2.2e-16

## 
##  Shapiro-Wilk normality test
## 
## data:  acre_log
## W = 0.97153, p-value < 2.2e-16

When AMBIENT > 25 degrees C (Interior T)

Table: Summary of High (>25) Ambient Temperatures
Treatment count max min range mean median sd
bare substrate 132 39.5 15.5 24.0 26.44697 28.25 8.952218
sedum acre 132 37.5 15.5 22.0 25.76515 28.75 8.362366
sedum rubrotinctum 132 39.0 15.5 23.5 26.45455 29.25 8.780499